div {
    position: relative;
    width: 300px;
    height: 30px;
    background-color: skyblue;
    a {
        text-decoration: none;
        color: #fff;
        line-height: 30px;
        &:hover {
            color: red;
            text-shadow: 1px 1px 2px rgba(0,0,0,.2);
        }
        &::after {
            position: absolute;
            top: 5px;
            right: 10px;
            content: "";
            width: 20px;
            height: 20px;
            background-color: pink;
        }
    }
}